Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
  • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
  • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
  • D04B15/78—Electrical devices

Definitions

• the present invention relates to a needle selecting device for a circular knitting machine.
• the present invention relates to a needle selecting device for a circular knitting machine, which is capable of knitting a predetermined pattern by being attached and detached based on a predetermined plan.
• the knitting circular knitting machine has a plurality of knitting needles 3 and is stored in a cylinder 2, a yarn feeding device 8, a knitting procedure recording device 4, and a pattern knitting procedure storage device 4.
• a needle selection device 1 for transmitting the set pattern knitting procedure to the vertical movement of the needle.
• the knitting cylinder 2 is rotated by a motor 6 via a transmission mechanism 7, and the rotation of the knitting cylinder, more specifically, the rotation angle of the knitting cylinder, is notified by a detector 5 and the knitting procedure storage device 4
• the knitting procedure corresponding to the rotation angle of the knitting cylinder 2 is transmitted from the pattern knitting procedure storage device 4 to the needle selecting device 1.
• the pattern knitting procedure storage device 4 is usually a bin drum or a computer storage device.
• the plurality of yarns 9 are supplied to the knitting needle 3 via the yarn feeding device 8.
• a main part of the needle selection device is slid in parallel with a plurality of sheets. It is known that it is composed of movably arranged flat plates 60.
• the plate 60 slides by a signal from a bin or computer storage device on a pin drum.
• the jack 61 contacting below the knitting needle moves toward the center of the knitting cylinder 62, and as a result, the jack Disengagement of the lower cam bucket 63 of 6 1 with the lifting force 6 4. Therefore, by controlling the sliding of the flat plate 60 by the signal from the pin or the storage device, the vertical movement of the corresponding knitting needle is controlled, and the predetermined knitting can be knitted. .
• An object of the present invention is to provide a needle selecting device for a circular knitting machine having a smaller size and a high response speed.
• the needle selecting device is provided with an And a plurality of fingers which are arranged substantially superimposed on each other, and which can be pivoted in the sliding direction of the knitting needle by being pivotally supported near the center, respectively, and a rear of each of the plurality of fingers. And a housing for supporting the plurality of fingers and the electromagnetic finger operating device, the electromagnetic finger operating device being disposed in the housing and selectively swinging the finger.
• a permanent magnet is provided at an end of the finger on a side remote from the knitting cylinder, with a direction connecting both poles thereof substantially aligned with a longitudinal axis direction of the finger.
• a pushing surface having a chevron shape or a single chevron shape in a horizontal plane and having a predetermined thickness in a vertical direction is formed at an end of the finger on a side close to the knitting cylinder.
• the electromagnetic finger actuating device comprises a plurality of electromagnets, each having an S pole and an N mounted on a housing, the S pole and the ⁇ pole of each electromagnet being vertically spaced;
• the permanent magnet is positioned so as to substantially oppose the end face of the permanent magnet at the upper end position and the lower end position of the swing of the finger.
• the housing includes a plurality of pivots for pivotally supporting each of the plurality of fingers near a center thereof, and vertically sliding both side surfaces of ends of the plurality of fingers on a pushing surface side.
• each electromagnet of the electromagnetic finger actuator is forward / reverse in accordance with a predetermined plan.
• the finger oscillates by selectively passing current in both directions to select a grandchild between the pushing surface of the finger and the finger bat. Thereby, the engagement between the raising cam and the force bat is selected to enable knitting of a predetermined pattern.
• the main part of the needle selecting device according to the present invention is oscillated as described above.
• the finger is swung by the attraction and repulsion of the electromagnet with respect to the permanent magnet provided at the end of the finger. It can be operated at a faster response speed than the known needle selecting device. Further, since the structure is simple, it can be manufactured at a low cost, and the power consumption required for the operation can be greatly reduced.
• the finger guide of the needle selecting device is formed with a guide surface of a finger pad of a jack which abuts below the knitting needle, so that the finger guide is provided outside the knitting cylinder for some reason.
• the protruding bat is previously excluded by the guide surface. As a result, the finger is unlikely to be damaged because the fingerbat does not directly collide with the finger.
• the pushing of the finger at a swinging position in which a bushing surface of the finger is engaged with a finger batting of a jack abutting below the knitting needle is the two ends of the surface of the chevron-shaped portion, which are farther from the knitting cylinder, or the ends of the one-sided chevron-shaped portion, which are farthest from the knitting cylinder, are the finger guides of the finger guide.
• the relative position between the finger and the finger guide is set so as to be the same as the surface or inside the finger guide from the guide surface. Is more preferable.
• the needle selecting device having such a structure since the finger batter located on the guide surface is smoothly contacted with the finger, the risk of damaging the finger can be reduced. As a result, the durability of the needle selecting device can be greatly increased.
• the needle selecting device can be used even when the circular cylinder rotates in both forward and reverse directions.
• a push surface formed in a single angle shape may be used.
• FIG. 1 is a front view of a needle selecting device showing one embodiment of the present invention.
• FIG. 2 is a side view taken along lines ⁇ - ⁇ in FIG.
• FIG. 3 is a side view taken along the line Iff-Iff in FIG. -FIG. 4 is an enlarged perspective view showing a relative relationship between one finger in the needle selecting device shown in FIG. 1 and its electromagnetic finger operating device and housing.
• FIGS. 5 and 6 are front views schematically showing the operation of the needle selector according to the present invention and the relationship between the jacking bag and the raising cam.
• FIG. Fig. 6 shows the case where the cam does not come into contact.
• FIG. 7 is a plan view showing the shape of the pushing member and the positional relationship between the pushing member and the guiding surface of the housing.
• FIG. 8 is a perspective view showing an example of a conventionally known knitting circular knitting machine.
• FIG. 9 is a schematic side sectional view showing a conventionally known needle selecting device. [Best mode for implementing the description]
• the needle selection device of the present embodiment eight fingers 11 and an electromagnetic finger actuator 30 disposed behind each of the fingers 11 are provided. It consists of eight fingers 11 and a housing 20 supporting the electromagnetic finger actuator.
• the needle selection device in this embodiment shows eight fingers, but the number is particularly limited. It is not a thing. At least 16 fingers are used in this type of conventional needle selection device (sliding type). A small number of fingers can reduce the outside of the needle selection device. preferable.
• the operation of the needle selecting device can be performed at a high speed as described later, so that the needle selecting device can be formed by eight fingers. The ideal number of fingers in the needle selection device is only one.
• one finger 1 extends from the center part 19 of the finger rotatably supported by the pivot 16 to the center part 1.9 of the finger.
• the first arm 12 and the second arm 13, the pushing member 14 attached to the tip of the first arm 12, and the permanent magnet 17 attached to the tip of the second arm 13 Become.
• the tip of the pushing member 14 is formed substantially in the shape of a chevron in a horizontal plane including the axis of the finger 11, and its inclined surface forms the pushing surfaces 15, 15 ′.
• the permanent magnet 17 is formed so that its pole, that is, the quotient connecting the N pole and the S pole is aligned with the longitudinal direction of the finger 11.
• one set of electromagnets is arranged for one fin 11.
• this set of electromagnets has two electromagnetic coils 33 and 34 and electromagnetic ends 31 and 35 provided at the ends of the respective electromagnetic coils 33 and 34, so-called U-shaped. Form an electromagnetic coil.
• FIG. 4 shows that the two electromagnetic end portions 31 and 35 are connected to the electromagnetic coils 33 and 34 by conducting wires, but this is for convenience of explanation.
• the electromagnetic end is one end of the core of the electromagnetic coil.
• the electromagnetic end portions 31 and 35 are arranged in the rear vertical plate 22 of the housing 20 as shown in FIG. That is, in FIG. 3, the electromagnetic ends 31a and 35a are the ends of the core of the set of electromagnetic coils 33a and 34a.
• the electromagnetic end 35a Is positive and the electromagnetic end 31a is negative.
• the state can be changed from the opposite state, that is, the electromagnetic end 35a is negative and the electromagnetic end 31a is positive. Since the conversion of the direction of the current is normally performed using a transistor, the change between the positive and negative sides of each electromagnetic surface can be performed at a very high speed.
• the arrangement method is such that the push surfaces 15 and 15 ′ of the finger 11 (one push surface 15 a, 15 b.
• the symbols are attached only for 15 h) in Fig. 2 and are arranged in the vertical direction (corresponding to the sliding direction of the knitting needle) with an interval.
• the eight fingers 11 can be moved forward as shown in FIG.
• Four books (not shown in Fig. 1) can be pivoted on the opposite side. Therefore, as shown in Fig.
• the arrangement of the electromagnetic surface of the electromagnetic coil corresponding to the permanent magnet 17 at the rear end of the eight fingers 11 is also arranged on the left side and on the right side as four sets. .
• the eight fingers * the central part 19 in FIG. 2 are the left 19a, 19b, 19c and 19d and the right 19e, 19f, It is divided into two sets at 19 g and 19 h.
• the center part 19 of each finger and the pivot 16 can be designed to have dimensions sufficient to withstand the high-speed sliding of each finger i 1.
• the durability of the needle selection device of the present invention can be improved. Sex can be increased.
• the size of the entire device can be reduced to 4 ⁇ for a needle selection device having I-strength.
• the interval between the permanent magnet 1 and the electromagnetic end portions 31 and 35 of the electromagnetic finger actuator 30 be arranged as close as possible without contacting them.
• the housing 20 has a vertically extending support member (not shown) substantially at the center of the housing 20, and supports four pivots 16 on both sides of the pivot support member. .
• the housing has a front vertical plate or finger guide 21 which is provided with a substantially rectangular hole 23 in which the finger 11 is inserted.
• the hole 23 may be formed as a slit extending from the upper end to the lower end of the housing 20. That is, the distance between the side walls 25, 25 (FIGS. 2 and 4) of the hole 23 is determined to be slightly larger than the distance between the respective side walls 55, 55 'of the bushing member 14, and the distance between the side walls 25, 25 (FIGS. 2 and 4).
• the relative position of the finger guide 21 and the pivot 16 supporting the finger 11 is determined so that at least a part of the pushing surface 15 protrudes from the guide surface 24 of the finger guide 21.
• reference numeral 40 denotes a jack
• the jack 40 is provided with a finger pad 41 and a cam pad 42.
• the S pole at the end of the permanent magnet 17 of the finger 11 faces the electromagnetic end 31 whose end face is the N pole, and as a result, the finger 11 is In Figure 5, it is horizontal.
• the finger batter 42 of the jack 40 on the knitting cylinder (not shown) abuts the pushing surface 15 of the finger 11, and the jack 40 becomes Rotate counterclockwise.
• the cam pad 42 at the lower end of the jack 40 does not engage with the lifting cam 43 arranged on the condition of the circular knitting machine, and as a result, the jack 40 is moved by the lifting cam 43.
• the resulting jack 40 and the knitting needles (not shown) in contact with it are not subjected to the upward movement.
• the poles of the electromagnetic ends 31 and 35 are By reversing the energizing direction, the S pole of the permanent magnet is attracted from the position shown in Fig. 5 by the N pole appearing at the electromagnetic end 35, and the S pole appears at the electromagnetic end 31.
• the pushing surface 15 at the tip of the finger 11 is lowered downward by being rebounded. In this state, when the knitting cylinder rotates, the finger bat 41 of the jack 40 on the knitting cylinder does not contact the pushing surface 15 and the jack 40 is moved in FIG. You will maintain a nearly vertical position.
• the cam pad 42 of the jack 40 that rotates together with the knitting cylinder while maintaining the vertical posture abuts the lifting cam 43, and is guided by this triangular side portion to ascend. Raise the knitting needle that comes into contact with the top of the jig.
• the positional relationship between the pushing surface 15 of the finger 11 and the finger backing 41 of the jack 40 is opposite to that in Fig. 6, with the bushing surface 15 of the finger 11 facing upward.
• the engagement between the finger battery 41 and the pushing surface may be disengaged by moving up.
• the swing motion of the finger 11 1 This is performed by switching the direction of energization. This switching of the conduction direction can be performed at high speed because it is usually performed by using a transistor, and the finger changes its position by swinging about the pivot 16, so that the electromagnet can be attracted by different poles. It can quickly change its position in response to a comrade's opposition.
• the bush surface of the finger can be quickly attached to and detached from the engagement position with the finger pad of the jack as compared with any conventionally known needle selecting device.
• the shape of the pushing member 14 is a mountain shape having pushing surfaces 15 and 15 'inclined on both sides as shown in FIGS. 7 (a), (b), (c), (d) and (e). It may be formed, or may be formed in a single angle shape having a pushing surface 15 ′ inclined only on one side as shown in FIG. 7).
• a single needle selector can cope with both forward and reverse rotation when the knitting cylinder rotates in both forward and reverse directions, while the latter can be used when the knitting cylinder rotates in only one direction. Can be used.
• the relative positions of the finger guide 21 and the pushing member 14 are such that the pushing surfaces 15, 15 'of the pushing member 14 are completely guided. , 24 ′, and a part of the side walls 55, 55 ′ of the pushing member 14 may be defined to be exposed from the guide surfaces 24, 24 ′.
• points 56, 56 'where the pushing surfaces 15, 15' intersect with the side walls 55, 55 'of the pushing member 14 are guiding surfaces. 24, 24 ', or finger guide 21 so that the intersections 56, 56' coincide with the surfaces of the guide surfaces 24, 24 'as shown in FIG. It is preferable that the relative position between the and the pushing member 14 be determined.
• the jack is guided by the guiding surfaces 24, 24 'and advances toward the pushing surfaces 15, 15'.
• the backing battery 41 rests on the push surface 15 or 15 'without any resistance, and the push surface 15 or Can be moved by being pushed by 15 '(specifically, the jack bat is pushed toward the axis of the knitting cylinder).
• the guide surfaces 24, 24 ' serve to push the jack to the proper level when the jack protrudes in the radial direction of the knitting cylinder due to centrifugal force or breakage. It is possible to prevent the cut surface from damaging the finger of the needle selection device.
• the inclination angles of the guide surfaces 24 and 24 ' may be arranged such that the guide surfaces 24 and 24' are horizontal in FIG. 7 as shown in FIGS. 7) and 7 (b).
• 7 (c) may be provided inclining outward as shown in FIG. 7 (c), or may be provided inclining inward as shown in FIG. In the case of Fig. 7 (c) ll, it helps to push the protruding jack slowly and in the case of Fig. 7 (d). Help.
• the shape of the guide surface is not necessarily limited to a plane, but may be formed as an arc.
• the needle selection device of the present invention is configured as described above, the movement of the pushing surface of the finger for needle selection is very quick, and therefore, the number of fingers is smaller than that of the conventional needle selection device. Since the number of needles can be reduced, the size of the needle selecting device can be reduced. In addition, since the structure is simple, the needle selecting device can be manufactured at low cost, and the power consumption required for the operation can be greatly reduced. In addition, as shown in a preferred embodiment of the present invention, when the both ends of the pushing surface of the pushing member are arranged inside the guide surface of the housing, the push member is selected by the bat on the rotating knitting cylinder. The risk of damaging the finger of the needle device can be prevented.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Knitting Machines (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=13687363

Family Applications (1)

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Cited By (1)

Families Citing this family (8)

Citations (2)

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• 1984
  • 1984-04-21 JP JP7934784A patent/JPS60224845A/ja active Granted
• 1985
  • 1985-04-20 WO PCT/JP1985/000222 patent/WO1985004910A1/ja active IP Right Grant
  • 1985-04-20 EP EP19850902137 patent/EP0185766B1/en not_active Expired

Patent Citations (2)

Non-Patent Citations (1)

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